(19)

(11)

EP 2 768 600 A2

(12)

(88) Date of publication A3: 29.08.2013 (43) Date of publication: 27.08.2014 Bulletin 2014/35 (21) Application number: 12848762.6 (22) Date of filing: 10.10.2012

(51) International Patent Classification (IPC):  B01D 46/00(2006.01) B01D 46/10(2006.01) F02C 7/052(2006.01) B64D 33/02(2006.01) B01D 46/12(2006.01) (86) International application number: PCT/US2012/059460 (87) International publication number: WO 2013/103416 (11.07.2013 Gazette 2013/28)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 17.10.2011 US 201113274965 (71) Applicant: Aerospace Filtration Systems, Inc. Chesterfield, Missouri 63005 (US)	(72) Inventor: BOYCE, Mark Edward Chesterfield, Missouri 63005 (US) (74) Representative: Smaggasgale, Gillian Helen  WP Thompson 55 Drury Lane London WC2B 5SQ London WC2B 5SQ (GB)